Out, damned spot! out, I say!--One: two: why, then, 'tis time to do't.--Hell is murky!--Fie, my lord, fie! a soldier, and afeard?
Get out, damn spot! Get out, I say! One, two—well, it's time to do it. Hell is dark! Fie, my lord, fie! A soldier, and afraid?
Gentlewoman · Act 5, Scene 1
In her sleepwalking scene, Lady Macbeth tries to scrub invisible blood from her hands while reliving the murder of Duncan. The woman who called on spirits to unsex her and fill her with cruelty is now consumed by the horror of what she has done. The spot—the bloodstain—cannot be removed, and neither can the guilt it represents.